GB2034691B - Process for the preparation of diphenyl-methane dicarbamates and polymethylene polyphenyl carbamates - Google Patents

Process for the preparation of diphenyl-methane dicarbamates and polymethylene polyphenyl carbamates

Info

Publication number
GB2034691B
GB2034691B GB7922506A GB7922506A GB2034691B GB 2034691 B GB2034691 B GB 2034691B GB 7922506 A GB7922506 A GB 7922506A GB 7922506 A GB7922506 A GB 7922506A GB 2034691 B GB2034691 B GB 2034691B
Authority
GB
United Kingdom
Prior art keywords
dicarbamates
diphenyl
methane
preparation
polymethylene polyphenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7922506A
Other languages
English (en)
Other versions
GB2034691A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlantic Richfield Co
Original Assignee
Atlantic Richfield Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Richfield Co filed Critical Atlantic Richfield Co
Publication of GB2034691A publication Critical patent/GB2034691A/en
Application granted granted Critical
Publication of GB2034691B publication Critical patent/GB2034691B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C271/00—Derivatives of carbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C271/06—Esters of carbamic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB7922506A 1978-10-20 1979-06-28 Process for the preparation of diphenyl-methane dicarbamates and polymethylene polyphenyl carbamates Expired GB2034691B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/953,135 US4162362A (en) 1978-10-20 1978-10-20 Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates

Publications (2)

Publication Number Publication Date
GB2034691A GB2034691A (en) 1980-06-11
GB2034691B true GB2034691B (en) 1983-05-11

Family

ID=25493621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7922506A Expired GB2034691B (en) 1978-10-20 1979-06-28 Process for the preparation of diphenyl-methane dicarbamates and polymethylene polyphenyl carbamates

Country Status (16)

Country Link
US (1) US4162362A (de)
JP (1) JPS5557550A (de)
AU (1) AU4768679A (de)
BE (1) BE879534A (de)
BR (1) BR7904877A (de)
CA (1) CA1116177A (de)
DE (1) DE2931473A1 (de)
ES (1) ES482987A1 (de)
FR (1) FR2439183A1 (de)
GB (1) GB2034691B (de)
IT (1) IT1119798B (de)
NL (1) NL7903674A (de)
NO (1) NO793255L (de)
PL (1) PL117371B1 (de)
SE (1) SE7908699L (de)
YU (1) YU155879A (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5579358A (en) * 1978-12-13 1980-06-14 Mitsui Toatsu Chem Inc Preparation of polyethylene polyphenyl carbamate
US4202986A (en) * 1979-02-12 1980-05-13 Atlantic Richfield Company Preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with Lewis acid catalysts intercalated in graphite
US4230877A (en) * 1979-03-22 1980-10-28 Atlantic Richfield Company Method for increasing the 4,4'dicarbamate isomer of the diphenylmethane dicarbamates during preparation thereof
JPS5612357A (en) * 1979-07-09 1981-02-06 Mitsui Toatsu Chem Inc Production of polymethylenepolyphenylpolycarbamate
DE2931554A1 (de) * 1979-08-03 1981-02-26 Basf Ag Verfahren zur herstellung von methylen-bis-phenyl-carbaminsaeureestern und polymethylen-polyphenylcarbaminsaeureestern
CA1150293A (en) * 1979-10-01 1983-07-19 Keisuke Wada Process for the production of methylenedicarbanilates
JPS5679658A (en) * 1979-12-05 1981-06-30 Mitsui Toatsu Chem Inc Novel polyisocyanate composition
DE3013907A1 (de) * 1980-04-11 1981-10-22 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von methylen-bis-phenylcarbaminsaeureestern und polymethylen-polyphenylcarbamidsaeureestern
JPS56156252A (en) * 1980-05-02 1981-12-02 Mitsubishi Chem Ind Ltd Preparation of methylene dicarbanilates
JPS56167655A (en) * 1980-05-28 1981-12-23 Mitsubishi Chem Ind Ltd Preparation of methylenedicarbanilate
DE3020784A1 (de) * 1980-05-31 1981-12-10 Basf Ag, 6700 Ludwigshafen Aralkylanilinderivate und herbizide, die diese verbindungen enthalten
US4290968A (en) * 1980-07-23 1981-09-22 Atlantic Richfield Company Preparation of polyisocyanates from polycarbamates
US4369141A (en) * 1980-08-25 1983-01-18 Atlantic Richfield Company Process to improve isocyanate yield upon pyrolysis of a polyfunctional urethane which has been extracted with a combination of hydrochloric acid and alcohol
US4292254A (en) * 1980-10-17 1981-09-29 Atlantic Richfield Company Preparation of polyisocyanates from polycarbamates
US4303794A (en) * 1980-12-22 1981-12-01 The Dow Chemical Company Separation and recovery of 4,4'-methylene dimethyl diphenyldicarbamate
US4543419A (en) * 1981-02-25 1985-09-24 Atlantic Richfield Company Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates
US4318861A (en) * 1981-03-18 1982-03-09 Atlantic Richfield Company Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl isocyanate compositions
US4320069A (en) * 1981-03-20 1982-03-16 Atlantic Richfield Company Oxazoline stabilized diphenylmethane diisocyanate-polymethylene polyphenyl isocyanate compositions
US4332741A (en) * 1981-03-23 1982-06-01 Atlantic Richfield Company Dichloroparabanic acid stabilized diphenylmethane diisocyanate-polymethylene polyphenyl isocyanate compositions
HU188157B (en) * 1981-11-10 1986-03-28 Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara,Hu Process for producing 1,1-dichloro-4-methyl-1,3-pentadiene
JPH02111065U (de) * 1989-02-22 1990-09-05
DE69224495T2 (de) * 1991-06-26 1998-08-13 Lucky Ltd Verfahren zur selektiven Herstellung von 4,4-Methylen-bis-(N-phenylalkylcarbamate)
US5206412A (en) * 1992-02-07 1993-04-27 Arco Chemical Technology, L.P. Selective process for the preparation of diphenylmethane diisocyanate precursors
JP2008175295A (ja) * 2007-01-18 2008-07-31 Aisin Ai Co Ltd 手動変速機のリバースレストリクト機構

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB461352A (en) * 1935-07-11 1937-02-11 Deutschen Celluloid Fabrik Manufacture of condensation products and of lacquers and plastic masses therefrom
US2946768A (en) * 1957-08-12 1960-07-26 Bayer Ag Condensation products of carbamic acid esters
US4014914A (en) * 1970-01-12 1977-03-29 Badische Anilin- & Soda-Fabrik Aktiengesellschaft Manufacture of 4,4'-diphenylmethane diisocyanate and a mixture of diisocyanates and polyisocyanates
US3962302A (en) * 1974-03-08 1976-06-08 Atlantic Richfield Company Production of isocyanates from esters of carbamic acids (urethanes)
US3919279A (en) * 1974-06-26 1975-11-11 Atlantic Richfield Co Catalytic production of isocyanates from esters of carbamic acids

Also Published As

Publication number Publication date
SE7908699L (sv) 1980-04-21
PL217432A1 (de) 1980-04-21
US4162362A (en) 1979-07-24
FR2439183B1 (de) 1984-09-14
ES482987A1 (es) 1980-04-16
IT1119798B (it) 1986-03-10
YU155879A (en) 1982-08-31
BE879534A (fr) 1980-04-21
IT7949854A0 (it) 1979-07-25
JPS5557550A (en) 1980-04-28
JPS6123182B2 (de) 1986-06-04
PL117371B1 (en) 1981-07-31
NL7903674A (nl) 1980-04-22
FR2439183A1 (fr) 1980-05-16
NO793255L (no) 1980-04-22
GB2034691A (en) 1980-06-11
DE2931473A1 (de) 1980-04-30
AU4768679A (en) 1980-04-24
CA1116177A (en) 1982-01-12
BR7904877A (pt) 1980-07-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee